Newegg offers the Acer Predator XB271HU bmiprz 27" 144Hz IPS LED-Backlit LCD WQHD Gaming Monitor in Black, model no. UM.HX1AA.001, for $689.99 with free shipping. That's the lowest total price we could find by $11. It features a native resolution of 2560x1440, Nvidia G-Sync technology, 144Hz refresh rate, 1,000:1 contrast ratio, four USB 3.0 ports, HDMI, and DisplayPort.